Facebook owns you

[gvidas]

I don't think being a "product" rather than a "customer" makes it less legitimate to be concerned about what happens to you. If anything, it should make it more important. The transaction between a business and its customer is supposed to be mutually beneficial, whereas the transaction between a business and its product is almost by definition one-sided. But exploitation is exploitation. Just because they were never doing anything other than profiting from you doesn't mean you should be less concerned about it.